clearing transaction data

 hi all,

we have a test environment that holds lots of customized applications , personalizations , workflows , alerts , stored procedures and complex scripted views.

it also contains lots of faulty testing transactions data for financials and logestics modules (AP , AR , FA , CM , GL , INV , PO)

the thing is that now we need to clear all transactions data from all mentioned modules, and yet leave the master data intact.

i need to know if there are any scripts that can do this task, or any materials clearifying the main tables involved in each module's transactions.

thanks in advance.